Of course solar achieves both of those goals better too. It reduces fuel imports (and/or leaves more for export) and provides another "crop" that doesn't have income correlated with other produce.
> ... you could drive 70 times as many miles in a solar-powered electric car as you could in one running on biofuels from the same amount of land.
The article notes that the EVs have a lot of storage embedded, so the biofuels to EV problem might be considered mostly a transmission issue!